Sir John Roos, Knt., 7th Lord Roos of Helmsley

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Sir John Roos, Knt., 7th Lord Roos of Helmsley, son of Sir William de Roos, Knt., 6th Lord Roos of Helmsley, was killed at the Battle of Beauge, Anjou, France, 22 March 1420/21.1

John married Margery le Despenser, daughter of Sir Philip le Despenser, Knt. and Elizabeth Tibetot, about 1404.2


Margery le Despenser b. bt 1398 - 1400, d. 20 Apr 1478
This person was last edited on10 Jul 2019


  1. [S1947] Douglas Richardson, Royal Ancestry: A Study in Colonial and Medieval Families (Five vols., Salt Lake City, Utah: s.p., 2013), 4:216 (Nettlestead 15), further cited as Richardson, Royal Ancestry.
  2. [S1947] Richardson, Royal Ancestry, 4:215 (Nettlestead 15).